That’s a really great and also a really hard question! We love the Quantum class ships because we think they offer a nice mix of included activities, foods, entertainment, etc. The Oasis class, as well, but the newer Oasis class ships tend to be really expensive. The oldest ships (Grandeur, Vision) offer great fares but have the fewest options for food venues and activities. The Voyager and Freedom class ships especially those that have been amplified (Navigator, Mariner, Independence, etc) probably offer the best value in terms of cost for activities, food options, etc. We LOVED the Icon but, as our son says, it’s a lot of bang but it cost a whole lotta bucks. 🤣 Our very first cruise was on the Anthem and we loved it. Our second was the Mariner and that was a wonderful experience even though it was a smaller ship. It may also depend on what is important to you - pools, slides, activities, live music, food options beyond the buffet and dining room, shows, etc. There hasn’t been a single Royal Caribbean cruise that we haven’t enjoyed. We try to book as early as possible for three prices and we also check during sales for lower prices and call them to reprice our cruises if we find there is a lower price to help save money (up until final payment date). If there’s something more specific you would like to know, please ask! 😊